noaa-ocean-22621 Tiree Passage, Northwest Scotland Glycymeris glycymeris d18O Data from 1799-2010 CE Reynolds, D.J.; Hall, I.R.; Slater, S.; Scourse, J.D.; Halloran, P.R.; Sayer, M.D.J. Tiree Passage, Northwest Scotland Glycymeris glycymeris d18O Data from 1799-2010 CE 2017-09-11 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22621 Investigator D.J. Reynolds Investigator I.R. Hall Investigator S. Slater Investigator J.D. Scourse Investigator P.R. Halloran Investigator M.D.J. Sayer earth science paleoclimate paleoceanography delta 18O,bivalve,range upper bound,per mil PDB,null,paleoceanography,raw,isotope ratio mass spectrometry,N,glycymeris glycymeris; Annual resolution absolutely dated earth science paleoclimate paleoceanography age,null,null,year Common Era,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,bivalve,null,per mil PDB,null,paleoceanography,raw,isotope ratio mass spectrometry,N,glycymeris glycymeris; Annual resolution absolutely dated earth science paleoclimate paleoceanography delta 18O,bivalve,range lower bound,per mil PDB,null,paleoceanography,raw,isotope ratio mass spectrometry,N,glycymeris glycymeris; Annual resolution absolutely dated earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean physical properties geoscientificInformation 1799 AD 2010 AD 151 cal yr BP -60 cal yr BP Complete 56.629167 56.629167 -6.4 -6.4 Ocean Atlantic Ocean North Atlantic Ocean Tiree Passage>LATITUDE 56.629167>LONGITUDE -6.4 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Reynolds, D.J., I.R. Hall, S. Slater, J.D. Scourse, P.R. Halloran, and M.D.J. Sayer 2017 Paleoceanography 32 1153-1173 10.1002/2017PA003154

The lack of long-term, highly resolved (annual to sub-annual) and absolutely dated baseline records of marine variability extending beyond the instrumental period (last ~50-100 years) hinders our ability to develop a comprehensive understanding of the role the ocean plays in the climate system. Specifically, without such records, it remains difficult to fully quantify the range of natural climate variability mediated by the ocean, and to robustly attribute recent changes to anthropogenic or natural drivers. Here we present a 211-year (1799-2010 CE; all dates hereafter are common era) seawater temperature (SWT) reconstruction from the northeast Atlantic Ocean derived from absolutely dated, annually resolved, oxygen isotope ratios recorded in the shell carbonate (d18Oshell) of the long-lived marine bivalve mollusc Glycymeris glycymeris. The annual record was calibrated using sub-annually resolved d18Oshell values drilled from multiple shells covering the instrumental period. Calibration verification statistics and spatial correlation analyses indicate that the d18Oshell record contains significant skill at reconstructing Northeast Atlantic Ocean mean summer SWT variability associated with changes in sub-polar gyre (SPG) dynamics and the North Atlantic Current. Reconciling differences between the d18Oshell data and corresponding growth increment width chronology demonstrates that 68% of the variability in G. glycymeris shell growth can be explained by the combined influence of biological productivity and SWT variability. These data suggest G. glycymeris can provide seasonal to multi-centennial absolutely dated baseline records of past marine variability that will lead to the development of a quantitative understanding of the role the marine environment plays in the global climate system. STUDY NOTES: Weighted growing season (March to October) oxygen isotope series from annually resolved growth increments in glycymeris glycymeris shells collected from Tiree Passage (NW Scotland). Growth Index data added to study on 28-FEB-2019. Provided Keywords: Sclerochronology, North Atlantic, Glycymeris glycymeris, dog cockle, stable isotopes, seawater temperature, reconstruction

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/reynolds2017/reynolds2017-tiree.txt NOAA Template File; Tiree Passage d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/reynolds2017/reynolds2017-tiree-sgi.txt NOAA Template File; G. glycymeris Standardized Growth Index Data USA/NOAA DIF Version 9.8.4 2019-03-01 2019-03-01